From 479e697e6dc7d557e3bcc3d722f1fbcf09d47894 Mon Sep 17 00:00:00 2001
From: Mygod <contact-git@mygod.be>
Date: Sun, 23 Oct 2016 15:39:06 +0800
Subject: [PATCH] Experimental support for demo users

TODO: Untested code. Need to find out how to activate demo users.

Fix #950 nevertheless.
---
 .../shadowsocks/ProfileManagerActivity.scala  |  5 ++--
 .../shadowsocks/ShadowsocksSettings.scala     | 23 +++++++++++++------
 2 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/src/main/scala/com/github/shadowsocks/ProfileManagerActivity.scala b/src/main/scala/com/github/shadowsocks/ProfileManagerActivity.scala
index e7ba61b8..5edded94 100644
--- a/src/main/scala/com/github/shadowsocks/ProfileManagerActivity.scala
+++ b/src/main/scala/com/github/shadowsocks/ProfileManagerActivity.scala
@@ -7,7 +7,7 @@ import android.content._
 import android.content.pm.PackageManager
 import android.nfc.NfcAdapter.CreateNdefMessageCallback
 import android.nfc.{NdefMessage, NdefRecord, NfcAdapter, NfcEvent}
-import android.os.{Bundle, Handler}
+import android.os.{Build, Bundle, Handler, UserManager}
 import android.provider.Settings
 import android.support.v7.app.{AlertDialog, AppCompatActivity}
 import android.support.v7.widget.RecyclerView.ViewHolder
@@ -86,7 +86,7 @@ final class ProfileManagerActivity extends AppCompatActivity with OnMenuItemClic
       val builder = new SpannableStringBuilder
       val tx = item.tx + txTotal
       val rx = item.rx + rxTotal
-      builder.append(item.name)
+      builder.append(if (isDemoMode) "Profile #" + item.id else item.name)
       if (tx != 0 || rx != 0) {
         val start = builder.length
         builder.append(getString(R.string.stat_profiles,
@@ -186,6 +186,7 @@ final class ProfileManagerActivity extends AppCompatActivity with OnMenuItemClic
   private var undoManager: UndoSnackbarManager[Profile] = _
 
   private lazy val clipboard = getSystemService(Context.CLIPBOARD_SERVICE).asInstanceOf[ClipboardManager]
+  private lazy val isDemoMode = Build.VERSION.SDK_INT >= 25 && getSystemService(classOf[UserManager]).isDemoUser
 
   private var nfcAdapter : NfcAdapter = _
   private var nfcShareItem: Array[Byte] = _
diff --git a/src/main/scala/com/github/shadowsocks/ShadowsocksSettings.scala b/src/main/scala/com/github/shadowsocks/ShadowsocksSettings.scala
index a52753e1..1d44fd9c 100644
--- a/src/main/scala/com/github/shadowsocks/ShadowsocksSettings.scala
+++ b/src/main/scala/com/github/shadowsocks/ShadowsocksSettings.scala
@@ -5,7 +5,7 @@ import java.util.Locale
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener
 import android.content.{Intent, SharedPreferences}
 import android.net.Uri
-import android.os.Bundle
+import android.os.{Build, Bundle, UserManager}
 import android.support.design.widget.Snackbar
 import android.support.v14.preference.SwitchPreference
 import android.support.v7.app.AlertDialog
@@ -41,13 +41,21 @@ object ShadowsocksSettings {
     pref.asInstanceOf[SwitchPreference].setChecked(value)
   }
 
-  def updatePreference(pref: Preference, name: String, profile: Profile) {
+  def updatePreference(pref: Preference, name: String, profile: Profile, demo: Boolean = false) {
     name match {
-      case Key.name => updateEditTextPreference(pref, profile.name)
-      case Key.host => updateEditTextPreference(pref, profile.host)
-      case Key.remotePort => updateNumberPickerPreference(pref, profile.remotePort)
+      case Key.name =>
+        updateEditTextPreference(pref, profile.name)
+        pref.setSummary(if (demo) "Profile #" + profile.id else "%s")
+      case Key.host =>
+        updateEditTextPreference(pref, profile.host)
+        pref.setSummary(if (demo) "shadowsocks.example.org" else "%s")
+      case Key.remotePort =>
+        updateNumberPickerPreference(pref, profile.remotePort)
+        pref.setSummary(if (demo) "1337" else "%d")
       case Key.localPort => updateNumberPickerPreference(pref, profile.localPort)
-      case Key.password => updateEditTextPreference(pref, profile.password)
+      case Key.password =>
+        updateEditTextPreference(pref, profile.password)
+        pref.setSummary(if (demo) "\u2022" * 32 else "%s")
       case Key.method => updateDropDownPreference(pref, profile.method)
       case Key.route => updateDropDownPreference(pref, profile.route)
       case Key.proxyApps => updateSwitchPreference(pref, profile.proxyApps)
@@ -248,6 +256,7 @@ class ShadowsocksSettings extends PreferenceFragment with OnSharedPreferenceChan
   var profile: Profile = _
   def setProfile(profile: Profile) {
     this.profile = profile
-    for (name <- Array(PROXY_PREFS, FEATURE_PREFS).flatten) updatePreference(findPreference(name), name, profile)
+    val demo = Build.VERSION.SDK_INT >= 25 && activity.getSystemService(classOf[UserManager]).isDemoUser
+    for (name <- Array(PROXY_PREFS, FEATURE_PREFS).flatten) updatePreference(findPreference(name), name, profile, demo)
   }
 }